Apparatus for scouring greasy materials and recovering the solvent.



C. H. L. WIESE.

APPARATUS FOR SCOURING GREASY MATERIALS AND RECOVERING THE SOLVENT. APPLHJATION FILED MAR. 24. 1915.

1,1 60,48 1 Patented Nov; 16, 1915.

\ZOLUMDM FLANOIJRAPH CO WASHINGTON D. r

cent; HEINRICH nnntvie wrnsn; or

arranarns nor. sconnrne 'enniisv ncense Application filed March 24, 1915.

. To all whom it may concern."

Bev it known that I, CARL Hninni'on LUD- wIo lVInsn, a subject of the German E111 eror and residin at. Neumiinster Germany, have invented certain new and useful Apparatus for 7 Scourmg Improvements in Greasy Materials vent, of. which the tion.

The object of the present invention is to provide a simple and eii'ective apparatus for scouring hides or skins in the manufacture of leather, leather waste in the manu iacture of manure, and fruit kernels and the like which contain grease, oil, or other fatty matter. 1

A further object of the invention is to .provide means for recovering the solvent employed in the scouring of the materials. I

In the accompanying drawingsFigure 1 shows the apparatus in elevation partly in section, and Fig. 2 in a cross section.

The apparatus shown consists of a rotating drum a in which two serpentines or helices Z) and 0 are arranged the ends of which project out through the hollow axles One of these serpentines, for. instanceb, is used for heating the material and the solvent, while the other being provided with line openings 0 is used for introducing steam into the drum. The helices Z) and c extend around the inside of the drum in contact therewith; being formed in the helices constituting stirring or lifting blades. The perforated helix 0 is disposed between the convolutions of the helix 6 and the inlet and discharge ends of both helices extend concentrically through the hollow axles f of the drum. In this manner a sort of agitator is formed, which keeps the contents of the drum in continuous motion, thus allowing an intensive action of the solvent on the material to be deprived ofits fatty matters. The shape of the bent parts of the serpentine sections and Recovering the Solfollowing is a spec1ficamay be chosen according to the size and the condition of the materials tobe ungreased. The serpentine b may be provided with a perforated isolating layer 9, which prevents a direct contact of the material with the metal walls of the serpentine. Pipe bends (Z and e projecting into the hollow axles 7 may be provided for introducing the solvent or for removing the vapors to be condensed, and may be in communication with narnnmiis AND Specification of LettersPatmt.

I any suitable means inwardly extending loops on in the single closed lvnniannsrnn, GERMANY.

nncovnnrivs THE sonvnnr.

Patented Nov. is, leis. Serial No. 18,791.

I a blower and a condensator'not shown in the drawing. The material may be fed into the drum and removed out of thesame by a suitable door it. i

The operation may be carried out as follows: The materials to be ungreased are filled into the drum a by the door It and after closing this door the solvent is introduced. Then the drum is set to rotate by and eventually the serpentine Z) is used for heating the contents. If the condition of the material requires it steam may be allowed to enter by the ser pentine c, which however, is not always necessary. The curved parts of the serpentine forming blades serve for keeping the contents of the drum continuously agitated. When the solvent has acted upon the material a suiiicient length of time it isdrained off, the material is either heated by the serpentine 7) or steam is allowed to enter by the serpentine 0, which finally distributes it over the contents of the drum while the latter is kept rotating. The steam mixes with the vapors of the solvent evaporated by the dry ing serpentine b adhering to the materials and the mixture will be sucked out by way of the pipe bend cl from where it may be led to a condensator. The vapors which are not condensed in the condensator may be returned into the drum together with the air through the bend e.

The operation of the apparatus may be varied according to need for instance it may be found advisable for certain kinds of materials to merely allow the dry serpentine to take effect on the material by supplying heat without allowing steam to enter by way of the serpentine c.

It will be seen that the process is carried apparatus in which the wet and dry serpentinesaccount for all possible circumstances. The recovered solvent is very abundant.

Y I claim: a

1. An apparatus of the character described, comprising a rotatable drum, a heating helix extending around the inside of said drum rotating therewith and having inwardly extending looped portions adapted to raise and drop the contents as the drum rotates.

2. An apparatus of the character described, comprising a rotatable drum, a heatinghelix extending around the inside of said drum rotating therewith and having inwardly exhelix arranged in the drum parallel to the ,7

' heating helix.

' the drum rotates, helices extending around the inside or" the 3. An apparatus of the character described, comprising a drum, hollow axles on which drum rotating therewith and formed with'inwardly projecting looped portions arranged to stir the contentsof the drum, the end portions of said helices projecting concentrically through the hollow axles.

1 a l. An apparatus of the character described, comprising a drum hollow axles on which Ge ie'sof this patent niay be'obtained for five cents each, by addressing I 1 a Washington,-D.G. I 1

the drum rotates, helices extending around the inside of the d-rurn rotating therewith andforrnfed with inwardly projecting looped portions arranged to'stir the contents of the drum, the end portions of said helices projecting concentrically through the llOllOW axles, and supply and rounding the end portions of the communicating with the drum.

CARL HEINRICH LUDWIQ Witnesses; V v r MAX'KAEMPFF,

FRANcrs R. STEWART.

helices the Commissioner of Patents,

discharge pipes sur- 

